1:08 air monitoring

Question 1

A combustible gas reading of “100” or “5.00” indicates the atmosphere is above ___% LEL or ___ % vol. CH4, and an explosion hazard exists. Move away from
hazardous area immediately.

Answer 1

100%, 5.00

Question 2

All personnel operating in atmospheres containing CO at greater than ___ ppm (parts
per million) are required to wear an SCBA.

Answer 2

35

Question 3

Hydrogen sulfide is a colorless, flammable, extremely hazardous gas with a “___ ____” smell.

Answer 3

rotten egg